let me know what you think of this idea?

i like in south korea where i teach english and i know people will pay anything to practice their english! but im sure most high school and uni students would rather practice english with someone their own age! so they can talk about computer games and football! and i also remember from been a student in england how poor i was!

so my idea is a website where korean students can pay to talk to an english student. probably using skype or something similar, they can then write reviews about the english person... how clear their voice is etc... i was thinking £3 for a 20 minute conversation and maybe 5% for the website! (me)

i have this idea and feel confident it could work but have no idea where to take it! and how to advertise it when its done! any help would be appreciated as would your honest opinion about my idea, thanks. rob.